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katrin2010 [14]
3 years ago
14

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.

Mathematics
1 answer:
My name is Ann [436]3 years ago
3 0

x = 2  \\ y = 7

is the answer to:

y = 11 - 2x \\ 4x - 3y =  - 13

_________________________________________

x = 5 \\ y = 2

is the answer to:

2x + y = 12 \\ x = 9 - 2y

_________________________________________

x = 3 \\ y = 5

is the answer to:

2x + y = 11 \\ x - 2y =  - 7

_________________________________________

x = 7 \\ y = 3

is the answer to:

x + 3y = 16 \\ 2x - y = 11

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Suppose that a box contains 6 cameras and that 3 of them are defective. A sample of 2 cameras is selected at random. Define the
mezya [45]

Answer: 1/5, 1/2, 0.

Step-by-step explanation:

given data:

no of cameras = 6

no of cameras defective = 3

no of cameras selected = 2

Let p(t):=P(X=t)

p(2)=m/n,

m=binomial(3,2)=3!/2!= 3

n=binomial(6,2)=6!/2!/4! = 15

p(3)= 3/15

= 1/5.

p(1)=m/n,

m=binomial(6,1)*binomial(2,2)=6!/1!/4!*2!/2!/0!= 7.5

n=binomial(6,2)= 15

p(2)= 7.5/15

= 1/2

p(0)=m/n,

m=0

p(0)=0

7 0
3 years ago
Read 2 more answers
16 out of every 20 students prefer hamburgers or hotdogs what percent of students prefer hamburgers
mel-nik [20]

Answer:

16

Step-by-step explanation:

16

4 0
1 year ago
Which number from the set {0, 1,4,6} makes the inequality true?<br> 6x - 3 &gt; 21
yaroslaw [1]
4 because 6(4) = 24 and 24-3=21
6 0
3 years ago
Find the area of a circle with a diameter of 14 meters. Round your answer to the nearest hundredth of a square meter.
Jlenok [28]

<u>To find the area of the circle</u>:

 ⇒ need to know the formula: \pi r^{2}

  • r: radius or half of diameter's length ⇒ 7 meters

<u>Let's calculate:</u>

 Area = \pi (7)^2=49\pi =153.9380m^3

<u>The problem asks us to round to the nearest hundreth</u>:

Area = 153.94m^3

<u>Answer:</u> 153.94m^3

Hope that helps!

 

4 0
1 year ago
Sixty percent (60%) of those who attended the soccer game were parents. There were 120 people who
IrinaVladis [17]

Answer:

72

Step-by-step explanation:

<u>Given:</u>

There were 120 people in total.

60% were parents.

<u>To find:</u>

Number of parents attended.

Solution:

1. 60% of 120

It can also be written as:

\frac{60}{100}\times \frac{120}{1}

Simplify

  • Cancel zeros

\frac{60}{100}\\\\=\frac{6}{10}

  • Divide by common factor (2)

\frac{6\div2}{10\div2}=\frac{3}{5}

2. \bold{\frac{3}{5}\times \frac{120}{1}}

Multiply

\frac{3\times120}{5\times1} = \frac{360}{5}

Divide

\frac{360}{5}= 360\div5=72

Therefore, 72 parents attended the game.

4 0
2 years ago
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